• 대한의용생체공학회:의공학회지
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• 제21권3호
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• pp.261-271
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• 2000

벽면운동(wall motion)과 임피던스 페이즈앵글(impedance phase angle; 압력파와 유랑파 기아의 위상차)을 고려하여 맥동유동하에 있는 복부대동맥 분기관모델에서 2차원 전산유체해석을 수행하였다. 해석결과 분기광 근처에서응 전단응력의 크기가 매우 급격한 변화를 보임을 관찰하였고 벽면운동은 전단응력의 진폭을 감소시키는 효과를 가져왔다. 임피던스 페이즈 앵글이 음의 값을 향해 갈수록 시간 평균된 벽면 전단응력(mean wall shear stress)의 값은 감소하였으나 진폭(amplitude of wall shear stress)은 오히려 증가하였다. 페이즈앵글의 영향은 평균 벽면전단응력이 영에 근접하는 외벽(outer wall or lateral wall)의 바같쪽으로 휘어지는 부분(curvature site)에서 상대적으로 크게 나타났는데 $-90^{\circ}$ 페이즈앵글(혈류파가 혈압파를 1/4주기 앞서는 경우)일 경우에 $0^{\circ}$의 경우에 비해 평균은 $50\%$정도 감소하였고 진폭은 $15\%$정도의 상승를 나타내었다. 그러므로 고혈압 환자와 같이 큰 음의 페이즈앵글을 갖는 경우, 벽면전단응력의 평균은 낮아지고 시간에 따라 변화량(진폭)은 증가하므로 low and oscillatory wall shear stress 이론에 의하면 동맥경화에 더 민감하게 된다. 비뉴턴유체로 모델링한 경우에는 뉴턴유체의 경우에 비해 벽면전단응력의 평균값이 증가하므로서 동맥경화에 덜 민감하게 된다.

• Parasites, Hosts and Diseases
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• 제22권2호
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• pp.229-237
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• 1984

마우스를 실험동물로 하여 스파르가눔(sparganum)을 경구감염시킨 후 충체의 이행과정 및 충체분포를 관찰함으로써 스파르가눔의 병원성을 이해하고 실험적 스파르가눔토에 대한 기초자료를 마련하고자 이 연구를 실시 하였다. 스파르가눔은 강원도 횡성군에서 포획한 유혈목이(Matrix tigrina lateralis)의 피하조직 및 내장에서 회득한 것을 사용하였고 ICR계 마우스 21∼259정도의 수컷 28마리에 대하여 각각 5마리의 스파르가눔 두절(scolex) 및 경부(neck)를 경구감염시킨 후 10분후부터 14일까지 도살하고 전신부검을 실시하여 충체 이행 과정 및 분포를 관찰한 바 결과는 다음과 같다. 1. 스파르가눔은 감염 10분후 이미 마우스 십이지사의 장벽을 관통하고 있는 것이 관찰되었고 30분 이내에 관통을 끝낸 다음 복륙내에 주로 분포하였다. 특히 장벽을 관통할 때에는 계관에서 복륙쪽으로 직접 뚫고 나오는 것이 관찰되었다. 2. 감염 1시간부터 1일까지는 대부분의 충체가 복륙내에서 발견되었고 1일에 근육이나 피하조직으로 이행한 것도 관찰되었다. 3. 충체가 대부분 피하조직으로 이행한 것은 감염 7일이내인 것으로 나타났는데 감염 14일까지 관찰한 바 피하 또는 근금조직에서 고수된 28마리의 충체는 마우스 경부(neck) 주위조직에 13마리, 체간부(trunk)에 12마리, 두부(head)에 3마리가 분포하였고 이들중 하악골하부 및 견갑하부의 피하조직에서 가장 많은 충체가 발견되었다. 이들 피하조직 또는 장관벽의 조직반응은 거의 관찰되지 않았다. 4. 마우스에 감염된 스파르가눔은 처음에 평균 4mm이던 것이 7일후 평균 12mm, 14일후 평균 35mm로 성장하였다. 이상의 결과로 미루어볼 때 마우스에 경구감염된 스파르가눔은 10∼30분후에 위 또는 십이지사벽을 관통하여 복륙으로 나온 후 롱격막 또는 복막을 뚫고 7R이내에 주로 경부 및 그 주위조직으로 이행하는 것으로 생각되었다.

• 대한디지털의료영상학회논문지
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• 제14권1호
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• pp.31-35
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• 2012

To test the real image quality of a spectral attenuated inversion-recovery (SPAIR) fat-suppression (FS) techniquein clinical abdominal MRI by comparison to turbo spin echo inversion-recovery (TSEIR) fat-suppression (FS) technique. 3.0T MRI studies of the abdomen were performed in 30 patients with liver lesions (hemangiomas n: 15; HCC n: 15). T2W sequences were acquired using SPAIR TSEIR. Measurements included retroperitoneal and mesenteric fat signal-to-noise (SNR) to evaluate FS; liver lesion contrast-to-noise (CNR) to evaluate bulk water signal recovery effects; and bowel wall delineation to evaluate susceptibility and physiological motion effects. SPAIR-TSEIR images produce significantly improved FS and liver lesion CNR. The mean SNR of the retroperitoneal and mesenteric fat for SPAIR were 20.5, 10.2 and TSEIR were 43.2, 24.1 (P<0.05). SPAIR-TSEIR images produced higher CNR for both hemangiomas CNR 164.88 vs 126.83 (P<0.05) and metastasis CNR 75.27 vs 53.19 (P<0.05). Bowel wall visualization was significantly improved using in both SPAIR-TSEIR (P< 0.05). The real image quality of SPAIR was better than over conventional TSEIR FS on clinical abdominal MRI scans.

• 한국임상수의학회지
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• 제24권3호
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• pp.467-472
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• 2007

Alimentary lymphoma accounts for approximately 5% of neoplasm and diffuse lesion is more common than solitary nodular form in dogs. An eleven year-old male Yorkshire terrier was examined because of nonspecific gastrointestinal symptoms such as anorexia and vomiting for 10 days. An abdominal mass was palpated, which was originated from small intestinal wall in abdominal ultrasonography. Small intestine was obstructed by hypoechoic mass and lost normal layering and measured 24.5m. After fine-needle aspiration, septic peritonitis due to intestinal rupture occurred and emergency surgery was performed. Solitary mass was found in small intestine and diagnosed as alimentary lymphoma through histopathologic examination. Conclusively, abdominal ultrasonouaphy could verify the thickened bowel, loss of wall layering and decrease of motility and percutaneous ultrasound-guided fine-needle aspiration is considered as useful diagnostic technique, especially in nodular form of alimentary lymphoma.

• 한국수정란이식학회지
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• 제29권4호
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• pp.393-395
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• 2014

A 6-year old, Greyhound bitch was presented with vaginal hemorrhage and dystocia. Physical examination revealed severe vaginal hemorrhage, abdominal pain, pale mucous membranes and the presence of solid structures to abdominal palpation. A hematological test revealed a marked hemorrhagic anemia, and abdominal radiography and ultrasonographic examination showed two dead fetuses in the uterus. Median laparotomy revealed a rupture of the left uterine horn adjacent to the bifurcation, region of weakened uterine wall in the right uterine horn, blood clots and uterine fluids in abdominal cavity without septic peritonitis. The bitch underwent ovariohysterectomy and recovered without complication.

• Journal of Trauma and Injury
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• 제34권3호
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• pp.208-211
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• 2021

Gallbladder injuries are rare in cases of blunt abdominal trauma and are usually associated with damage to other internal organs. If the physician does not suspect gallbladder injury and check imaging studies carefully, it may be difficult to distinguish a gallbladder injury from gallbladder stone, hematoma, or bleeding. Therefore, in order not to miss the diagnosis, the clinical findings and correlation should be confirmed. In the present case, a 60-year-old male presented to a local trauma center complaining of pain in the upper right quadrant and chest wall following a motor vehicle collision. Abdominal computed tomography (CT) showed a hepatic laceration and hematoma in the parenchyma in segments 4, 5, and 6 and active bleeding in the lumen of the gallbladder. Traumatic gallbladder injuries generally require surgery, but in this case, non-operative management was possible with cautious follow-up consisting of abdominal CT and angiography with repeated physical examinations and hemodynamic monitoring in the intensive care unit.

• Journal of Medicine and Life Science
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• 제18권3호
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• pp.56-60
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• 2021

In recent decades, tissue engineering advances have led to more skin substitutes becoming available. Acellular dermal matrix, initially developed for use in the treatment of full-thickness burns, is made by removing the cellular components from the dermis collected from donated bodies or animals. This class of scaffold is used to replace skin and soft tissue deficiencies in a variety of fields, including breast reconstruction, abdominal wall reconstruction, and burn treatment. Herein, we provide a detailed review of the clinical applications of acellular dermal matrix.

• Journal of Trauma and Injury
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• 제34권3호
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• pp.187-190
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• 2021

A 91-year-old female presented to Chonnam National University Hospital Regional Trauma Center with a lateral compression type III fracture of the pelvis. She was managed non-operatively for a week in the intensive care unit under close observation and had an emergency operation due to delayed onset of an acute obstructed direct inguinal hernia. Traumatic abdominal wall hernias are rare. However, trauma surgeons should always be aware of the possibility of such injuries because of their critical consequences.

• Journal of Medicine and Life Science
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• 제21권3호
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• pp.102-105
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• 2024

Omental adhesions to the anterior abdominal wall are a common complication of abdominal surgery. Specific adhesions to the back of the umbilicus represent a challenge for safe laparoscopic access. In this case report, we describe a simplified two-port laparoscopic access procedure for retro-umbilical adhesiolysis. We concluded that successful adhesiolysis of retro-umbilical adhesions using the sequential Darwish and Lee-Haung points is feasible, and this procedure is a safe, minimally invasive alternative to the primary laparoscopic approach.

• Journal of Chest Surgery
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• 제11권4호
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• pp.456-460
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• 1978

Desmoid tumor is found most often in the anterior abdominal wall of parous women. Although it may originate in virtually any musculotendinous structure, those of the chest wall are rare. We experienced a case of large dumb bell shaped desmoid tumor originated in intercostal muscle and invaded anterior chest wall, pericardium, pleura and the lung. The patient was healthy in appearance except a painful swelling on the anterior chest wall. Roentgenographic studies demonstrated a huge homogenous mass in the right anterior chest cavity. He was treated with resection of the tumor including .anterior chest wall, a portion of the pericardium, middle lobe, and part of upper & lower lobes of the right lung because of tumor invasion. The tumor composed with two parts, one [$5{\times}4{\times}3$cm in size] is over the rib cage and another [$10{\times}15{\times}10$cm in size] is in the right chest cavity. Postoperative course was uneventful and there was no evidence of recurrence until last visit, 5 months after surgery.